1321212103301 has 4 divisors (see below), whose sum is σ = 1334832846732. Its totient is φ = 1307591359872.

The previous prime is 1321212103249. The next prime is 1321212103307. The reversal of 1321212103301 is 1033012121231.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 897189734401 + 424022368900 = 947201^2 + 651170^2 .

It is a cyclic number.

It is not a de Polignac number, because 1321212103301 - 2³⁴ = 1304032234117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321212103307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6810371570 + ... + 6810371763.

It is an arithmetic number, because the mean of its divisors is an integer number (333708211683).

Almost surely, 2^{1321212103301} is an apocalyptic number.

It is an amenable number.

1321212103301 is a deficient number, since it is larger than the sum of its proper divisors (13620743431).

1321212103301 is an equidigital number, since it uses as much as digits as its factorization.

1321212103301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13620743430.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1321212103301 its reverse (1033012121231), we get a palindrome (2354224224532).

The spelling of 1321212103301 in words is "one trillion, three hundred twenty-one billion, two hundred twelve million, one hundred three thousand, three hundred one".